Mechanism for clamping members on spindles



J. B. ETTINGER, DECD A ETTINGER MIN Q MECHANISM FOR CLAMPING MEM Patented Nov. 7, 1922.

63am 4 05:21? aft/06% Patented Nov. Y, 1922.

at n or wa i wi s i i r not JOEL B. ETTINGEE, DECEASED, 13.45.1 13 015 PORTLAND, OREGON, BY GRACE ANDERSON BETTING-ER, ADMINISTRATE K, 01" PORTLAND, OREGON.

irncnsnisir role ctarrrinetinivrsnns on SPI'NDLES.

Original application filed June I, 1921.

T0 aZZ "iv/ 10771.615 may concern.

Be it known that JoEnB. Errrncnn, de-

ceased, late a citizen of the United States of America, and'resident of Portland, in the county of Multnomah and tate of Oregon, did invent certain new and usetul improve inentsin Mechanism for Clamping lnlembers on Spindles, of which the following is a specification. The invention relates to a inechanisnrt'or clamping a member on a spindle, and is applicable more particularly to securing, in fixed relationship upon a spindle, a cutterhead such asemployed in woodworking machinery, as for shaping moldings, groov ing and the like, and ithas for its object to afl'ord a practical, etlicient, and readily adjusted arrangementof parts for securing a cutter-head or other unit upon a spindle or similar rotary support.

ldore particularly, the purpose of the invention is to afford a construction that will enable quickly and accurately centering a member or cutter-head upon a spindle and clamping it tightly on such support.

"This application is a division oi original application filed June 1, 1921, Serial No. 474,191, and other objects and advantages will appear, fully from the following detailed description when read in conjunction with the accompanying drawing, the novel features being pointed, out in the claims at the end'of the description.

In the drawing Figure 1 is a vertical sectional view, taken centrally through a cutter-head and itssupporting spindle, with parts, in elevation;

Figure 2 is a horizontal sectional view on line 2-2 of Figure 1;

Figure 8, is a perspective view of one of the clamping keys, and

Figure 45 is a sectional view partially in elevation of the actuator for the clamping keys, j i The invention is applicable to the mounting or diiterenttypes of cutter-heads, hubs, or other equivalent members, upon a supporting spindle, wherever it is essential to bring about an accurate positioning and a rigid attaching of the member to he supported, by parts that are quickly ad ustable. This is accomplished in a general way by utilizing a plurality of independent, re-

Serial No. 474,191, Divided and this application filed November '5, 1921. Serial no. 513,158;

movable clamping devices, such as keys, arranged between the supporting spindle and the cutter-head or other member to be supported, and held in proper relationship by a positioning means which serves to guide the clamping devices to final clamping position. The clamping keys have an adjustable movement longitudinally of the spindle, and laterally oi the positioning means as they are actuated to clamping posit-ion, thus insuring the correct centeringof the member on the spindle.

As a convenient illustrative embodiment, there is shown a. supporting spindle 1, and a cutter-head or other member to be supported, designated at 2, while 3 is the positioning ineans,here shown in the form of a sleeve, the lower portion of which ex tends between the spindle 1 and head 52. The sleeve 3 carries a nut 4c at its lower end, upon which rests the head 2, while 5 is a cylindrical end piece or plug attached to the upper end 01 the sleeve, and carrying an adjustable post 6 arranged to. engage the upper end of the supporting spindle 1. v

The sleeve 3 is provided with a plurality of slots 7 cut entirely therethrough, and adapted to receive the clamping devices or. keys 8. Each clamping key includes a longitudinally straight surface 9, and a longitudinally inclined surface 10 for engagement with a correspondingly inclined surtacell, the surfaces 9 and 10 being curved transversely to conform to the adjacent suriaces oi the spindle and cutter-head.

Thuswhen the clamping keys are moved lengthwise into the head, they bring about an accurate centering of the head, as the position of the head on the spindle depends entirely upon the thickness and accuracy ot the clamping keys, while the positioning sleeve serves only to maintain the clamp-- ing keys in their proper longitudinal relation on the spindle. Various means may be utilized for effecting the necessary movement of. the clamping keys, and preferred way oi accomplishing this is by means of an actuator, in the form of a ring .12,

threaded on the positioning sleeve 3, and

provided with an interiorly arranged annular recess 13. Each clamping key is provided with a lateral extension or lug 141 at its upper end, which projects into the annular recess 13, so that as the actuator 12 is turned in one direction or the other, it carries with it the several clamping keys.

As the clamping keys are operated inwardly of the cutter-head and longitudinally of the spindle, they are guided by the positioning sleeve 3 and produce a wedging' action between the cutter-head and spindle, by reason of the inclined surfaces on the keys and head, and this action continues until a tight is obtained. The mechanism enables a cutter-head to be mounted rapidly in fixed relation-on a spindle, also permitting its removal just as quickly, while at the same time insuring centering cutter-head with maximum accuracy relatively to a spindle.

While the invention is herein set forth with reference to a certain structure, it may be modified in different ways without departing from the underlying novel features,

and the application is intended to cover any modified forms or arrangements that may come within the intended scope of the invention and of the following claims.

Claims:

1. Mechanism for clamping a cutter-head on a spindle, comprising positioning means adapted to be arranged between the spindle and cutter-head, and a plurality of separable clamping devices cooperating with said positioning means and having surfaces conforming to and engageable with the adjacent surfaces of the spindle and the cutter-head.

2. Mechanism for clamping a cutter-head on a spindle, comprising positioning means adapted to be arranged between the spindle and cutter-head, and a plurality of separable clamping devices removably cooperating with the positioning means and having surfaces conforming to and engageable with the adjacent surfaces of the spindle and the cutter-head.

3. Mechanism for clamping a cutter-head on a spindle, comprising positioning means adapted to be arranged between the spindle and cutter-head, and a plurality of separable clamping devices adjustable longitudinally of the spindle within said positioning means and having surfaces conforming to and engageable with the spindle and the cutter-head.

4. Mechanism for clamping a cutter-head on a spindle, comprising a positioning sleeve adapted to be interposed between the spindle and cutter-head, and clamping devices guided by the sleeve and adjustable longitudinally of the spindle for clamping said parts together, said clamping devices having surfaces conforming to the cutter-head and spindle.

5. Mechanism for clamping a cutterhead on a spindle, comprising a positioning sleeve adapted to be interposed between the spindle and the cutter-head, clamping devices guided by said sleeve and adapted to be adjusted longitudinally of the spindle for clamping said parts together, said clamping devices having surfaces conforming to the cutter head and spindle and an actuator adjustable on the sleeve and cooperating with said clamping devices for moving them to and from clamping relationship.

6. Mechanism for clamping a cutter-head on a spindle, comprising positioning means adapted to be arranged between the spindle and cutter-head, a plurality of clamping devices removably cooperating with the positioning means, said clamping devices having surfaces conforming to the cutter-head and spindle, and an actuator connected with said clamping devices and operable to adjust them simultaneously.

7. Mechanism for clamping a cutter-head on a spindle, comprising positioning means adapted to be arranged between the spindle and cutter-head, a plurality of clamping devices, removably cooperating with the positioning means, each clamping device comprising a key having a straight surface conforming to and arranged for engagement with the spindle and an inclined surface c0nforming to and arranged for engagement with a corresponding surface on the cutterhead, and an actuator connected with said clamping devices and operable to adjust them simultaneously.

8. Mechanism for clamping a cutter-head on a spindle, comprising positioning means adapted to be interposed between the spindle 100 and cutter-head, and a plurality of clamping devices guided by the positioning means and adjustable longitudinally of the spindle, each clamping device consisting of a key having a straight surface conforming to and 105 engaging the spindle and an inclined surface conforming to and engaging a corresponding surface on the cutter-head.

9. Mechanism for clamping a cutter-head on a spindle, comprising a positioning sleeve 110 adapted to be arranged between. the spindle and cutter-head, the sleeve having a plurality of openings therein, and clamping de vices adjustable in said openings, and having surfaces conforming to and engageable with 1 the adjacent surfaces of the spindle and the cutter-head.

10. Mechanism for clamping a cutter-head on a spindle, comprising a positioning sleeve adapted to be arranged between the spindle 120 and cutter-head, the sleeve. having a plurality of openings therein, and clamping devices adjustable in said openings, each of said clamping devices having a straight surface conforming to and engageable with the 125 spindle and an inclined surface conforming to and engageable with the cutter-head.

11. Mechanism for clamping a cutter-head on a spindle, comprising a positioning sleeve adapted to be arranged between the spindle 130 and cutter head, the sleeve having a plurality of openings therein a plurality of clamping devices adjustable in said openings and acting to clamp said cutter-head on the spin dle, said clamping devices having surfaces conforming to and engageable with the adjacent surfaces of the spindle and cutterhead, and an actuator adjustable on the positioning sleeve and cooperating with said clamping devices to adjust them simultaneously.

12. Mechanism for clamping a cutter-head on a spindle, comprising a positioning sleeve adapted to be arranged between the spindle and cutter-head, the sleeve having a plurality of openings therein, clamping devices movable in said openings, said clamping devices having surfaces conforming to and engageable with the adjacent surfaces of the spindle and cutter-head, and an actuator threaded on said positioning sleeve and having an interiorly arranged annular slot, each of the clamping devices having a lateral extension cooperating with said slot whereby adjustment of the actuator serves to move the clamping devices simultaneously.

13. Mechanism for clamping a cutter-head on a spindle, comprising a positioning sleeve adapted to be arranged between the spindle and cutter-head, the sleeve having a plurality of openings therein, clamping devices movable in said openings said clamping devices having surfaces conforming to and engageable with the adjacent surfaces of the spindle and cutter-head and an actuator threaded on said positioning sleeve and having an interiorly arranged annular slot, the clamping devices having lateral extensions cooperating with said slot whereby adjust ment of the actuator serves to move the clamping devices simultaneously, eachclamping device comprising a removable key having a straight surface for engagement with the spindle and an inclined surface for engagement with a corresponding surface on the member to be clamped.

In witness whereof, I have hereunto signed my name.

GRACE ANDERSON ETTINGER, Administmzfflaz 0/ the estate of J oeZ B. E tm'nger, deceased. 

